An empty glass

I've been dabbling with blender, partly to keep me off the streets and partly because I happened upon it and partly because it's fun. It's a full works 3D modelling and animation thing (open source, free, etc.) and there's a load of tutorials available as well. Here' s my first attempt at a recognisable object, complete with learning curves about materials, transparency, shadows, lights, scene setting, and lots more things I don't yet understand.